Brands Guides About
HP J4858D Aruba 1G SFP LC SX Transceiver Module — main product image
HP J4858D Aruba 1G SFP LC SX Transceiver Module
HP J4858D Aruba 1G SFP LC SX Transceiver Module
HP J4858D Aruba 1G SFP LC SX Transceiver Module
HP

HP J4858D Aruba 1G SFP LC SX Transceiver Module

★★★★★4.7 (12 reviews)

Drop-in 1000Base-SX connectivity for HPE Aruba switches — validated, hot-swappable Gigabit fiber without the compatibility guesswork.

View price on Amazon
Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The HP J4858D is an OEM SFP transceiver module that delivers 1000Base-SX Gigabit Ethernet over multimode fiber at up to 500 meters — the standard spec for LC-connected short-haul fiber links within a building or campus. What differentiates it from the generic SFP market is HPE OEM validation: Aruba switch platforms, particularly the 2930M family and 8320, enforce transceiver compatibility checks at the firmware level, and an unvalidated module can generate alerts, operate in a degraded state, or simply fail to link. The J4858D carries the HPE part number that satisfies those checks cleanly, making it the lowest-risk choice for Aruba-centric deployments where network stability is non-negotiable.

Practically, this module fits into any SFP slot on the supported platforms, operates on the installed multimode fiber infrastructure that most enterprise buildings already have in place, and supports hot-swap so it can be installed or replaced without taking the switch offline. The 850nm wavelength and LC duplex interface are industry-standard, meaning fiber patch cables and couplers are universally available. The module is purpose-built for the use case it fills: reliable, validated Gigabit connectivity across intra-facility fiber runs on Aruba switching infrastructure. Teams running 10G uplinks or planning fiber runs beyond 500 meters will need different module specifications — but within its defined envelope, the J4858D is a straightforward, dependable component.

Specifications

Brand
HP / Aruba
Model
J4858D
Form Factor
SFP (Mini-GBIC)
Standard
1000Base-SX
Speed
1 Gigabit Ethernet (1GbE)
Connector
LC duplex
Fiber Type
Multimode
Wavelength
850nm
Maximum Distance
Up to 1,640 ft (500m)
Compatible Platforms
OfficeConnect 1410 24, Aruba 2930M 24/40, Aruba 8320, MACsec Advanced Module

Pros & Cons

👍 Pros

  • OEM HPE branding eliminates the compatibility warnings and potential performance issues that third-party SFP modules can trigger on locked HPE Aruba switch firmware.
  • 1000Base-SX multimode support provides up to 500m reach — sufficient for the majority of intra-building fiber runs between IDF and MDF closets.
  • LC duplex connector is the modern standard for SFP fiber interconnects, compatible with the vast majority of installed multimode fiber infrastructure.
  • Hot-swap capability allows module replacement or installation without switch downtime, keeping maintenance windows minimal in production environments.
  • Validated compatibility across multiple Aruba switch families means this module can be standardized across a multi-model Aruba deployment.

👎 Cons

  • The 500m maximum range on multimode fiber is a hard ceiling — campus or inter-building links exceeding that distance require a different module (1000Base-LX on single-mode), and this module provides no upgrade path for those runs.
  • As an 850nm multimode module, it is inherently limited to shorter-reach applications — budget that spec into your network design from the start if longer distances are anticipated.
  • OEM HPE pricing typically carries a premium over generic or white-label SFP alternatives; for budget-constrained deployments where vendor lock-in can be overridden, third-party equivalents may be considered, though with firmware compatibility risk.
  • Gigabit (1G) throughput is the ceiling — this module does not support 10GbE or higher speeds, so uplink ports requiring 10G capacity require a different module class.

Frequently Asked Questions

The J4858D is an HPE-branded module validated specifically for HPE Aruba switch platforms including the OfficeConnect 1410 24, Aruba 2930M 24, 2930M 40, 8320, and MACsec Advanced Module. Many HPE switches enforce transceiver vendor locking and will generate warnings or refuse to operate with third-party SFPs — using the OEM module eliminates that risk entirely.
The J4858D supports up to 1,640 feet (500 meters) over OM2 or better multimode fiber using the LC connector interface. For runs exceeding that distance, a 1000Base-LX module over single-mode fiber would be the appropriate alternative.
This module uses an LC duplex connector and requires multimode fiber. It is a 1000Base-SX module, meaning it operates on 850nm wavelength — standard OM1, OM2, or OM3 multimode cabling infrastructure. It is not compatible with single-mode fiber.
Yes — SFP modules are designed for hot-swap insertion and removal. The switch port associated with the module will cycle, but the rest of the switch fabric continues operating, making maintenance and upgrades non-disruptive.
HPE Aruba SFP modules typically support Digital Optical Monitoring, which allows the switch management interface to report real-time transceiver diagnostics including transmit/receive power levels, temperature, and voltage — useful for proactive link health monitoring. Confirm DOM support for your specific switch model in HPE's compatibility matrix.

Related Products